Percolator.



E. S. PEGK.

PERGOLATOB.

nruouxon nun JULY 22, 1909.

Patented Apr. 12,1910.

2 SHEETS-SHEET X.

E. S. PEOK.

rnaoom'ron.

APPLICATION FILED JULY 22, 190B.

Patented Apr. 12, 1910.

2 BIIEETS-BEEBT 2.

(QM/1 ew UNITED STA'll1 S ZAZPENT OFFICE.

ERNEST S. PECK, OF CLEVELAND, OHIO.

PERCOLATOB.

To all whom it may concem:

Be it known that I, ERNEST S. Peon, a citizen of the United States, and a resident of Cleveland, county of 'Cuyahoga, and State of Ohio, have invented a new and useful Im provement in Percolators, of which the following is a specification, the princi le of the invention being herein explaine .and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

The resent invention belongs to the same genera class of apparatus as the percolators illustrated in two patents Nos. 925,833 and 925,835, issued to me June. 22, 1909. In such percolators, which are designed for the extraction of soluble oils and fats, as from tankage or other analogous material forming one of the products of garbage reduction plants or rendering establishments, or

T from the various oil bearing seeds, a suitable the tank is facilitated.

solvent, generally naphtha, is employed for the purpose of taking up the grease or other. oleaginous constituents. In use, such solvent is passed throu h the material in suiiicient quantity to toroughly extract the grease, after which extraction it becomes necessaly to recover the portion of the solvent that has been absorbed by the material, the quantity of the solvent thus absorbed being proportionately quite considerable, and the loss, unless it is thoroughly 'recovered, being a large item of expense. in the carr ing on of the operation referred to.

T e object of the present invention is the further simplification and improvement of the apparatus illustrated and described in the two patents just referred to, whereby the loss "of naphtha, owin to the volatilization of the same by the bo y of air that remains in the tank when the naphtha is introduced, is avoided, as also the making and breaking of the necessary exterior connections with To the accomplishment of these and related ends, said invention, then, consistsof the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such dis closed means constitn'tin however, but one of various-mechanical 011115 in which the principle of the invention may be used.

In said annexed drawings :Figur'e 1 Specification of Letters iatent,

Application tiled July 22, 1909.

Patented Apr. 12, 1910. Serial No. 509,017.

represents a central longitudinal cross-set improvements;, Fig. 2 is a transverse sec- ,tioual view thereof in one operative position; Fig. 3 is a similar sectional view thereof but in a different operative position; Fig. 4 is an end elevation of said percolator as viewed from the left in Fig. 1; and Fig. 5 illustrates a detail in the construction of the percolator.

In general, my improved percolator, as will be observed upon reference to the fi ures ust described, comprises a cylindrical rum A disposed in a substantially horizontal o sition and rotatably su orted upon r0 er bearings a. To this en it is provided 'with annular bearing rings a adapted to rest on such rollers and with a gear at one end wherewith suitable drivin means ma be connected, as will be read' understoo For the alternateintro uction and discharge of the material to be treated, such drum A is provided in its lateral, or cylindrical surface, with a longitudinally extendiiig series of man-holes a of WlllCll three are shown. These man-holes are adapted to be closed by means of covers a, exce t when the material is being thus passe therethrough. Disposed longitudinally of the drums, and laterally ad acent to said manholes, is a pipe B that is connected with the interior of the drum by means of a lurality of short connecting pipes b. T e inner ends of said pipes b that. open into the tanks interior, are protected against the entrance of material, that might otherwise obstruct them, by means of a perforated plate B extendin the entire length of'the drum, being s ace from the inner wall thereof so as to a ord a Valves b in t e connecting p1 es 6 permit the latter to be closed when Elace for the liquid to collect. esired. Two

other pipes B similarly extend longitudispaced about the surfaceof the atter from such firstnamed pipe 13, and so dis osed that when B is on the under si e of the drum, on a level With the body ofthe material being treated within said druin. As will be presently explained, the drum is not completely' lled with suchmaterial in operatmg the percolator, but a' percolator' having a "diameter, for. example, of seven feet, v ordinarily be filled only to a height of about re t ey will be located substantially ioa five feet. In such case, the pipes B would lie at the opposite endsof a chord located five feet across from the first pipe. Such pipes, like pipe B, are connected with the rum interior by means of a lurality of short pipes-b controlled by va lves b and having their inner ends protected, as before, by longitudinall extending perforated plates 13 spaced mm the inner wall of the drum. The two )ipes thus designed to be located substantiall on a level with the ma terial being treate when the percolator is in use, are connected at one end of the drum as shown in Fig. 4, and a branch extension b from the connecting pipe I) is brought to a point adjacent to the corres onding outer end of pi e B. The latter an the extension from t e other two pipes are provided with a double flan e b, so that connection between such en s and exteriorily supported pipes B, through which solvent is sup lied and withdrawn, may be simultaneous y eflected. I

It will be understood, of course, that while pipe. B with its corresponding perforated late B is located contiguously to the. manholes a through which material is supplied and discharged from the drum, such pipe and plate may be just as well located at a greater or less distance from such man-holes, so far as the operation of the mechanism is concerned. In such event, however, the location of the other two pipes will be correspondingly varied.

Substantially diametrically opposite the longitudinal pipe B (whether the latter lies adjacent to man-hole a or not) is yet another longitudinally dis osed pipe 0 that is connected with the rums interior by means of transversely di osed pairs of branched pipes a respective y controlled by valves 0', such pipes being connected wit Ts arran ed lon itudinally along the ipe. For sup fiying t e steam to lo itu inal pipe 0, a connection a is r0v1 ed, said connection being on a line with the axis of the drum and permanentl made through a suitable stufling box 0",.w ence radially extends a valve-controlled branch 0: to the pro'ecting end of said Ripe C.

he operation of t e rcolator, the structure ofwhich has thus 11 described, is as follows :--The position of thedrum shown in Figs. 1 and 2, isthat which it will normally occupy when being filled with tankage, as also while the nap tha absorbed by the material is being driven oil in the last Stage drum is thus dispose the covers, closing theman-holes may be removed and the drum filled preferably as has been indicated, about two-thirds full of the tankage. Such man-hole being then closed, the drum is rotated and'finally left in a tplosition, substantially a half-turn over;

' free of of the o ration. When' the,

ereupon its A interior is flooded with naphtha through pipe B (now disposed on the under side of the drum) so that such solvent may rise upwardly throu h the material. Y Any air intermixed with the material is driven out above the naphtha, and as the level of the latter rises above the level of the material, after percolatin through the mass, the major portion of t e grease will be in the upper stratum of the na htha, and will escape throiwh the horizonta 1y disposed overflows provided, in efl'ect, by the two pipes B After this step is completed, it is usually desirable to reverse the flow of naphtha, so as to more thoroughl extract the grease, and on occasion, the rum is prelinnnarily rotated one or more times in order to thoroughly intermingle its contents with the na htha. "When finally the tank is stoppe in reversed position, then the naphtha is admitted through the "erstwhile overflows B and withdrawn from lowermost 13 of the three ipes, all that will thus flow off, being finafiy drained away, and the tankage thus left behind, substantially rease. As has been explained, however, t ere will remain a considerable amount ofnaphtha in .such residual tanka e, and the recovery of this is next to be e ected. To this end steam is supplied through pipe 0 and its branched connections, the position of the tank being again changed, so as to dispose such pipe and connections on the under side in order that the steam may have to pass through the mass of tankasge before it can escape from the drum. uch escape of the steam, together with the associated naphtha vapors, is by way of a pipe D, supported exteriorily of the drum, and passing through a suitable stufiing box d in the end thereof, op osite to that at which the steam is supplied. A plate (2 serves as a shield for the inner end of the pi e, to prevent the entrance therein of the so id material being treated. Outslde of the drum, such vapor discharge pipe is connected with a suitable condenser (not shown).

By reason of the unique arrangement of the connections for the three pipes utilized 1n supplying naphtha to and withdrawin the same from the body of the tankage, suc connection 'ma be made or broken with little inconvenience, and this base of the operation relieved of much 0 its burden. It will furthermore be observed that whether the na htha be supplied to the un dermost lpipe or to the pipes B on a level wit the u per portion of the tankage, such naphtha is at no time passed through the overlying body of air that remains durin this part of the operation in the drum. he volatilization of naphtha that otherwise occurs is thus kept at a minimum, and a, corresponding saving thereof secured; for such volatilized naphtha once intermingled with the air is practically noncondensible, and so lost.

()ther modes of a plying the principle of my invention ma be employed instead of the one explaine change being made as regards the mechanism herein disclosed, pro- \l ed the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention 1. A percolator comprising a suitable receptacle provided! with openings for the supply and discharge of the material to be treated; connections to said receptacle for introducing the solvent, said connections lying below the normal level of the material in said receptacle; other connections, substantially on a line with such level, for with drawing the upper stratum of the solvent when thus introduced; and means for revol-sing the positions of said connections with relation to said level.

2. A percolator comprising a suitable receptacle provided with openings for the supply and discharge of the material to be treated; connections to the under side of'said receptacle forintrodu-cing the solvent, whereby the latter may be caused to rise upwardly through the material; other connections, substantially on a level with the material in said receptacle, for withdrawing the upper stratum of the solvent thus introduced; and means for reversing the positions of said connections with relation to said level.

3. A percolator comprising a suitable receptacle provided with openings for the sup ply and discharge of the material to be treated; connections to the under side of said receptacle for introducing the solvent, Whereby t e latter may be caused to rise upwardly through the material; a horizontal overflow connected with said receptacle substantially on a level with the material therein for withdrawing the upper stratum of the solv ent thus introduced; and means for reversin the positions of said connections and said overflow with relation to said lever.

4. A ercolator comprising a rotatable, substantially horizontal drum provided with openings in its cylindrical wall for the su p y and discharge of the material to he treated and circumferentially spaced connections to such wall for introducing and withdrawing solvent, respectively, said connec tions being so disposed that when the inlet connection is on the under side the discharge connection is locatedsubstantially on a level with the material in said-rece tacle, the connections for introducing an withdrawing solvent being unconnected with each other.

5. A percolator comprising a rotatable, substantially horizontal drum rovided with openings in its cylindrical wa for the supply and dischar e of the material to be treated; and a plurality of series of longitudinally ranged connections to such wall for introducing and withdrawing solvent, respectively, said series being circumferentially spaced about said drum and so disposed that when the inlet connection is on the under side a discharge connection is located substantially on a level with the material in said receptacle, the connections for introducing and withdrawing solvent being unconnected with each other.

6. A ercolator comprising a rotatable, substantially horizontal drum ]provided with o enings in its cylindrical wa for the su ply and discharge of the material to e treated; and three series of longitudinally ranged connections to such wall for introducing and withdrawin solvent, respectively, two of said series eing e uidistantly spaced about the circumference 0 said drum from the third and so disposed that when the inlet series is on the under side, the discharge series are located substantially on a level with the material in said rece tacle, the con nections for introducing an withdrawing solvent being unconnected with each other.

7. A ercolator comprising a rotatable, substantially horizontal drum provided with a series of ion 'tudinally alined man-holes in its cylindrica wall for the supply and discharge of the material to be treated; and a plurality of series of longitudinally ranged connections to such wall for introducing and withdrawing solvent, respectively, one of said series being located contiguously to said man-holes and another being circumferentially spaced therefrom so that the discharge connection is located substantially on a level with the material in said drum when the inlet connection is on the under side thereof, the connections for introducing and withdrawing solvent being nnconnected with each other.

8. A ercolator comprising a rotatable, substantially horizontal drum provided with a series of longitudinall alined man-holes in its cylindrical wall or the supply and discharge of the material to be trea and three series of longitudinally ranged connections to such wall for introducing and withdrawing solvent, respectively one of said series being located contiguously to said manholes and the other two being vequidistantly spaced about the circumference of said drum therefrom and so disposed that when such first series is on the underside such two are located substantially on a level with the material in said rece tacle, the connections for introducing an withdrawing solvent being unconnected with eachpther.

9. A rcolator, comprising a rotatable, substantially horizontal drum rovided with a series of horizontal man-ho es in its cylindrical wall for the supply and discharge of the material to be treated; three series of Ion 'tudinally ranged connections to such wal for introducing and withdrawin solvent respectively, one of said series %ein located contiguously to said man-holes, an the other two being equidistantly spaced about the circumference of such drum therefrom and so disposed that when such first series is on the under side, such two are located substantially on a level with the material in said receptacle.

10. A percolator comprising a rotatable, substantially horizontal drum provided with a series of longitudinall alined man-holes in its cylindrical wall or the supply and discharge of the material to be treated; a plurality of series of longitudinally ranged connections to such wall for introducing and withdrawing solvent, respectively one of said series being located contiguously to said man-holes and another being circumferentially spaced therefrom so as to be located substantially on a level with the material in said drum when said first series is on the under side thereof; and connections to the portion of such wall substantially diametrically opposite from said man-holes for introducmg steam.

11. A percolator com rising a rotatable, substantially horizontal drum provided with a series of longitudinall alined man-holes in its cylindrical wall or the supply and discharge of the material to be treated; three series of longitudinally ranged connections to such wall for introducing and withdrawing solvent, respectively one of said series being located contiguously to said man-holes and the other two being equidistantly spaced about the circumference of said drum therefrom and so disposed that when such first series is on the under side, such two are located substantially on a level with the material in said receptacle; and connections to the portion of such wall substantiall diametrically opposite from said man-ho es for introducing steam.

12. A percolator comprising a rotatable, substantially horizontal drum rovided with openings in its cylindrical wall for the supply and discharge of the material to be treated; three pipes disposed longitudinally of said drum, two of said pipes being equidistantly spaced about the circumference of said drum from the third; and a series of connections between each of said pi s and the drum-interior, the ends of said pipes being brought to a common point, whereby exterior connection may be made with all simultaneously, substantially as described.

13. A percolator com rising a rotatable, substantially horizontal rum provided with a series of longitudinally alined man-holes for the supply and discharge of the material to be treated; three pipes disposed longitudinally of said drum, one of said pi s bein located contiguously to said manoles an the other two being equidistantly s aced therefrom about the circumference 0 said drum; a series of connections between each of said pipes and the interior of the drum;

and an exterior connection for said papes rst havin a double opening, one for said name pipe and a common openin for the other two, substantially as describ Signed by me this 20th day of July, 1909.

ERNEST S. PECK. 

